21世纪通信技术现状分析（外文资料及中文翻译）.doc

Overall: throughout the global rapid development of high-tech, will become the telecommunications industry in the 21st century world economic locomotive, communication technology is undergoing hundred years not met great changes. This paper introduces the third generation mobile communication technology development present situation and the future of future mobile communication technology development trend. Along with the rapid development of mobile communications market in higher performance, users of mobile communication system raised taller requirement, want to enjoy more rich and high-speed communications business. The second generation of mobile communications operators development speed increasingly fierce easing and competition for the new growth point, through the development of data services to improve their own quality of service and business types, need 3G support. At the same time because the second generation of mobile communications radio frequency resource is nervous, already cannot satisfy long-term telecommunication demand development needs.
总括：纵观全球迅猛发展的高科技, 电信业必将成为21 世纪世界经济的火车头，通信技术正发生着百年未遇的巨大变化。本文介绍了第三代移动通信技术的发展现状，最后展望了未来移动通信技术发展的趋势。伴随着移动通信市场的快速发展，用户对更高性能的移动通信系统提出了更高要求，希望享受更为丰富和高速的通信业务。第二代移动通信运营商发展速度趋于缓和而竞争越加激烈，为寻找新的增长点，通过发展数据业务来提高自身的服务质量和业务类型，需要3G的支持。同时由于第二代移动通信无线频率资源日趋紧张，已不能满足长期的通信需求发展需要。 ………………